1 ;;;; font.scm -- construct font trees
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2004 Han-Wen Nienhuys <hanwen@xs4all.nl>
7 ;; As an excercise, do it with records.
8 ;; Should use GOOPS, really.
12 ;; lookup-font should be written in C.
14 ;; should dump tree to .texi as internal documentation
16 ;; * should extract design sizes from fonts: fonts should
17 ;; be read off the disk, on demand, something like:
19 ;; cmr -> ((font-load "cmr6") (font-load "cmr8") .. )
22 (define-class <Font-tree-element>
26 (define-class <Font-tree-leaf> (<Font-tree-element>)
27 (default-size #:init-keyword #:default-size)
28 (size-vector #:init-keyword #:size-vector))
30 (define-class <Font-tree-node> (<Font-tree-element>)
31 (qualifier #:init-keyword #:qualifier #:accessor font-qualifier)
32 (default #:init-keyword #:default #:accessor font-default)
33 (children #:init-keyword #:children #:accessor font-children))
35 (define (make-font-tree-leaf size size-font-vector)
36 (make <Font-tree-leaf> #:default-size size #:size-vector size-font-vector))
38 (define (make-font-tree-node
40 (make <Font-tree-node>
43 #:children (make-hash-table 11)))
45 (define-method (display (leaf <Font-tree-leaf>) port)
46 (map (lambda (x) (display x port))
48 "Font-size-family: \n"
49 (slot-ref leaf 'default-size)
50 (slot-ref leaf 'size-vector) )))
52 (define-method (display (node <Font-tree-node>) port)
59 "Font_node { \nqual: "
67 (display (car x) port)
69 (display (cdr x) port))
70 (hash-table->alist (font-children node)))
74 (define default-qualifier-order
75 '(font-encoding font-family font-shape font-series))
77 (define-method (add-font (node <Font-tree-node>) fprops size-family)
78 (define (assoc-delete key alist)
79 (assoc-remove! (list-copy alist) key))
80 (define (make-node fprops size-family)
82 (make-font-tree-leaf (car size-family) (cdr size-family))
84 ((qual (next-qualifier default-qualifier-order fprops)))
85 (make-font-tree-node qual
86 (assoc-get qual fprops)))))
88 (define (next-qualifier order props)
90 ((and (null? props) (null? order))
92 ((null? props) (car order))
93 ((null? order) (caar props))
95 (if (assoc-get (car order) props)
97 (next-qualifier (cdr order) props)))))
101 ((q (font-qualifier node))
102 (d (font-default node))
103 (v (assoc-get q fprops d))
104 (new-fprops (assoc-delete q fprops))
105 (child (hashq-ref (slot-ref node 'children)
111 (set! child (make-node new-fprops size-family))
112 (hashq-set! (slot-ref node 'children) v child)))
113 (if (pair? new-fprops)
114 (add-font child new-fprops size-family))))
117 (define-method (add-font (node <Font-tree-leaf>) fprops size-family)
118 (throw "must add to node, not leaf"))
121 (define-method (g-lookup-font (node <Font-tree-node>) alist-chain)
123 ((qual (font-qualifier node))
124 (def (font-default node))
125 (val (chain-assoc-get qual alist-chain def))
126 (desired-child (hashq-ref (font-children node) val)))
129 (g-lookup-font desired-child alist-chain)
130 (g-lookup-font (hashq-ref (font-children node) def) alist-chain))))
133 (define-method (g-lookup-font (node <Font-tree-leaf>) alist-chain)
136 ;; two step call is handy for debugging.
137 (define (lookup-font node alist-chain)
138 (g-lookup-font node alist-chain))
141 ; Each size family is a vector of fonts, loaded with a delay.
142 ; The vector should be sorted according to ascending design size.
145 (define-public (add-music-fonts node factor)
149 (list (cons 'font-encoding (car x)))
150 (cons (* factor (cadr x))
153 #(,(delay (ly:font-load "feta-nummer4"))
154 ,(delay (ly:font-load "feta-nummer6"))
155 ,(delay (ly:font-load "feta-nummer8"))
156 ,(delay (ly:font-load "feta-nummer10"))
157 ,(delay (ly:font-load "feta-nummer12"))
158 ,(delay (ly:font-load "feta-nummer16"))))
159 (fetaDynamic 14.0 #(,(delay (ly:font-load "feta-din6"))
160 ,(delay (ly:font-load "feta-din8"))
161 ,(delay (ly:font-load "feta-din10"))
162 ,(delay (ly:font-load "feta-din12"))
163 ,(delay (ly:font-load "feta-din14"))
164 ,(delay (ly:font-load "feta-din17"))))
167 #(,(delay (ly:make-virtual-font
168 (ly:font-load "feta11")
169 (ly:font-load "parmesan11")))
170 ,(delay (ly:make-virtual-font
171 (ly:font-load "feta13")
172 (ly:font-load "parmesan13")))
173 ,(delay (ly:make-virtual-font
174 (ly:font-load "feta14")
175 (ly:font-load "parmesan14")))
176 ,(delay (ly:make-virtual-font
177 (ly:font-load "feta16")
178 (ly:font-load "parmesan16")))
179 ,(delay (ly:make-virtual-font
180 (ly:font-load "feta18")
181 (ly:font-load "parmesan18")))
182 ; ,(delay (ly:make-virtual-font (ly:font-load "feta20") (ly:font-load "parmesan20")))
183 ,(delay (ly:make-virtual-font (ly:font-load "bigcheese20")))
184 ,(delay (ly:make-virtual-font
185 (ly:font-load "feta23")
186 (ly:font-load "parmesan23")))
187 ,(delay (ly:make-virtual-font
188 (ly:font-load "feta26")
189 (ly:font-load "parmesan26")))))
192 (fetaBraces 15 #(,(delay
193 (ly:make-virtual-font
194 (ly:font-load "feta-braces-a")
195 (ly:font-load "feta-braces-b")
196 (ly:font-load "feta-braces-c")
197 (ly:font-load "feta-braces-d")
198 (ly:font-load "feta-braces-e")
199 (ly:font-load "feta-braces-f")
200 (ly:font-load "feta-braces-g")
201 (ly:font-load "feta-braces-h")
202 (ly:font-load "feta-braces-i"))))))))
204 (define-public (add-cmr-fonts node factor)
205 (add-font node '((font-encoding . TeX-math))
206 `(,(* factor 10) . #(,(delay (ly:font-load "msam10")))))
209 (add-font node `((font-encoding . TeX-text)
210 (font-series . ,(vector-ref (car x) 2))
211 (font-shape . ,(vector-ref (car x) 1))
212 (font-family . ,(vector-ref (car x) 0)))
213 (cons (* factor (cadr x))
215 `((#(roman upright medium)
216 . (10.0 . #(,(delay (ly:font-load "cmr6"))
217 ,(delay (ly:font-load "cmr8"))
218 ,(delay (ly:font-load "cmr10"))
219 ,(delay (ly:font-load "cmr17")))))
220 (#(roman upright bold)
221 . (10.0 . #(,(delay (ly:font-load "cmbx6"))
222 ,(delay (ly:font-load "cmbx8"))
223 ,(delay (ly:font-load "cmbx10"))
224 ,(delay (ly:font-load "cmbx12")))))
225 (#(roman italic medium)
226 . (10.0 . #(,(delay (ly:font-load "cmti7"))
227 ,(delay (ly:font-load "cmti10"))
228 ,(delay (ly:font-load "cmti12")))))
229 (#(roman italic bold)
230 . (10.0 . #(,(delay (ly:font-load "cmbxti8"))
231 ,(delay (ly:font-load "cmbxti10"))
232 ,(delay (ly:font-load "cmbxti14")))))
233 (#(roman caps medium)
234 . (10.0 . #(,(delay (ly:font-load "cmcsc10")))))
235 (#(roman upright bold-narrow )
236 . (10.0 . #(,(delay (ly:font-load "cmb10")))))
237 (#(sans upright medium)
238 . (10.0 . #(,(delay (ly:font-load "cmss8"))
239 ,(delay (ly:font-load "cmss10"))
240 ,(delay (ly:font-load "cmss12"))
241 ,(delay (ly:font-load "cmss17")))))
242 (#(typewriter upright medium)
243 . (10.0 . #(,(delay (ly:font-load "cmtt8"))
244 ,(delay (ly:font-load "cmtt10"))
245 ,(delay (ly:font-load "cmtt12"))))))))
247 ;; Debian lmodern font support.
248 (define-public (add-cork-lm-fonts node factor)
251 (add-font node `((font-encoding . cork-lm)
252 (font-series . ,(vector-ref (car x) 2))
253 (font-shape . ,(vector-ref (car x) 1))
254 (font-family . ,(vector-ref (car x) 0)))
255 (cons (* factor (cadr x)) (cddr x))))
256 `((#(roman upright medium)
257 . (10.0 . #(,(delay (ly:font-load "lmr6"))
258 ,(delay (ly:font-load "lmr8"))
259 ,(delay (ly:font-load "lmr10"))
260 ,(delay (ly:font-load "lmr17")))))
261 (#(roman upright bold)
262 . (10.0 . #(,(delay (ly:font-load "lmbx6"))
263 ,(delay (ly:font-load "lmbx8"))
264 ,(delay (ly:font-load "lmbx10"))
265 ,(delay (ly:font-load "lmbx12")))))
266 (#(roman italic medium)
267 . (10.0 . #(,(delay (ly:font-load "lmri7"))
268 ,(delay (ly:font-load "lmri10"))
269 ,(delay (ly:font-load "lmri12")))))
270 (#(roman italic bold)
271 . (10.0 . #(,(delay (ly:font-load "lmbxi10")))))
272 (#(roman caps medium)
273 . (10.0 . #(,(delay (ly:font-load "lmcsc10")))))
274 (#(roman upright bold-narrow )
275 . (10.0 . #(,(delay (ly:font-load "lmb10")))))
276 (#(sans upright medium)
277 . (10.0 . #(,(delay (ly:font-load "lmss8"))
278 ,(delay (ly:font-load "lmss10"))
279 ,(delay (ly:font-load "lmss12"))
280 ,(delay (ly:font-load "lmss17")))))
281 (#(sans upright bold)
282 . (10.0 . #(,(delay (ly:font-load "lmssbx10")))))
284 (#(typewriter upright medium)
285 . (10.0 . #(,(delay (ly:font-load "lmtt8"))
286 ,(delay (ly:font-load "lmtt10"))
287 ,(delay (ly:font-load "lmtt12"))))))))
289 ;; ec-fonts-mftraced font support.
290 (define-public (add-ec-fonts node factor)
292 (lambda (x) (add-font node
293 `((font-encoding . Extended-TeX-Font-Encoding---Latin)
294 (font-series . ,(vector-ref (car x) 2))
295 (font-shape . ,(vector-ref (car x) 1))
296 (font-family . ,(vector-ref (car x) 0)))
297 (cons (* factor (cadr x)) (cddr x))))
299 `((#(roman upright medium)
300 . (10.0 . #(,(delay (ly:font-load "ecrm6"))
301 ,(delay (ly:font-load "ecrm8"))
302 ,(delay (ly:font-load "ecrm10"))
303 ,(delay (ly:font-load "ecrm17")))))
304 (#(roman upright bold)
305 . (10.0 . #(,(delay (ly:font-load "ecbx6"))
306 ,(delay (ly:font-load "ecbx8"))
307 ,(delay (ly:font-load "ecbx10"))
308 ,(delay (ly:font-load "ecbx12")))))
309 (#(roman italic medium)
310 . (10.0 . #(,(delay (ly:font-load "ecti7"))
311 ,(delay (ly:font-load "ecti10"))
312 ,(delay (ly:font-load "ecti12")))))
313 (#(roman italic bold)
314 . (10.0 . #(,(delay (ly:font-load "ecbi8"))
315 ,(delay (ly:font-load "ecbi10"))
316 ,(delay (ly:font-load "ecbi14")))))
317 (#(roman caps medium)
318 . (10.0 . #(,(delay (ly:font-load "eccc10")))))
319 (#(roman slanted-caps medium)
320 . (10.0 . #(,(delay (ly:font-load "ecsc10")))))
321 (#(roman upright bold-narrow )
322 . (10.0 . #(,(delay (ly:font-load "ecrb10")))))
323 (#(sans upright medium)
324 . (10.0 . #(,(delay (ly:font-load "ecss8"))
325 ,(delay (ly:font-load "ecss10"))
326 ,(delay (ly:font-load "ecss12"))
327 ,(delay (ly:font-load "ecss17")))))
328 (#(typewriter upright medium)
329 . (10.0 . #(,(delay (ly:font-load "ectt8"))
330 ,(delay (ly:font-load "ectt10"))
331 ,(delay (ly:font-load "ectt12"))))))))
333 ;; (display (make-font-tree 1.0))
335 ;; Century Schoolbook fonts file names on Debian/Sid
336 (define-public (add-century-schoolbook-fonts node factor)
338 '((font-family . roman)
339 (font-shape . upright)
340 (font-series . medium)
341 (font-encoding . latin1))
342 `(10.0 . #(,(delay (ly:font-load "uncr8a")))))
344 '((font-family . roman)
345 (font-shape . italic)
346 (font-series . medium)
347 (font-encoding . latin1))
348 `(10.0 . #(,(delay (ly:font-load "uncri8a")))))
350 '((font-family . roman)
351 (font-shape . upright)
353 (font-encoding . latin1))
354 `(10.0 . #(,(delay (ly:font-load "uncb8a")))))
356 '((font-family . roman)
357 (font-shape . italic)
359 (font-encoding . latin1))
360 `(10.0 . #(,(delay (ly:font-load "uncbi8a"))))))
362 (define-public (make-cmr-tree factor)
363 (let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
364 (add-music-fonts n factor)
365 (add-cmr-fonts n factor)
366 (if (ly:kpathsea-find-file "lmr10.pfb")
367 (add-cork-lm-fonts n factor))
368 (if (ly:kpathsea-find-file "ecrm10.pfa")
369 (add-ec-fonts n factor))
372 (define-public (make-century-schoolbook-tree factor)
373 (let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
374 (add-music-fonts n factor)
375 (add-century-schoolbook-fonts n factor)
378 (define-public (magstep x)
379 (exp (* (/ x 6) (log 2))))